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Interior & Exterior Angles Explained

This video explains interior and exterior angles of a polygon. In particular: how to calculate interior and exterior angle, how to find the the sum of interior or exterior angles, and how to find the number of sides of a polygon with just an angle. Practice questions are provided at the end of the video and more can be found on our 'Interior and Exterior Angles: Test Your Knowledge' video:    • Interior & Exterior Angles Practice Q...   This is an updated, 4K version of our previous video. Skip to: 00:00 Introduction 00:32 What is an interior angle and what is an exterior angle? 00:52 How to find the sum of interior angles 02:09 Formula for sum of interior angles 03:00 How to find an interior angle (for regular polygons) 03:22 Sum of exterior angles 03:32 Finding an exterior angle with a given interior angle 03:53 Finding the number of sides of a polygon (for regular polygons) 04:11 Practice questions Educational maths help videos to learn mathematics for school, exams or just general life. New videos added weekly. LIKE AND SUBSCRIBE Below are some links to products we recommend: Casio Scientific Calculator Black: https://amzn.to/3E4FBRF Casio Scientific Calculator Blue: https://amzn.to/2Zb5twk Casio Scientific Calculator Pink: https://amzn.to/3lWdHBf An excellent book if you're teaching mathematics or helping your children: The Elephant in the Classroom by Jo Boaler: https://amzn.to/3vwzra4 Linking rods can be used for a variety of topics: https://amzn.to/3vuZnD7 Follow us: Instagram:   / minitymaths   Twitter:   / minitymaths   Facebook:   / minitymaths   #maths #math #mathematics #learnmath #mathhelp #mathsteachingresources #GCSE With thanks to Mixkit for sound effects and/or music https://mixkit.co/